*{
	margin: 0;
	padding: 0;
	box-sizing: border-box;	
}
.pro-ul{
	width: 100%;
	overflow: hidden;
	padding: 10px;
}
.pro-ul li{
	float: left;
	width: 50%;
	list-style: none;
	height: 100px;
	position: relative;
}

.pro-ul li>div{
	float: left;
	width: 75%;
	text-align: center;
	margin: 10px 5%;
	padding: 15px 0;
	position: relative;
	background: #eff6ff;
	color: #3798ff;
	border-radius: 5px;
	font-size: 14px;
}
.pro-ul li:nth-of-type(4n+3)
,.pro-ul li:nth-of-type(4n+3)>div
,.pro-ul li:nth-of-type(4n+2)>div{
	float: right;
}

.pro-ul li:nth-of-type(4n+1):after{
	content: "\2192";
	font-size: 32px;
	padding: 10px 0;
	display: inline-block;
	color: #979797;
    position: absolute;
    right: -9%;
    top: 0;
}
.pro-ul li:nth-of-type(4n+2):after{
	content: "\2193";
	font-size: 32px;
	display: inline-block;
	color: #979797;
    position: absolute;
    bottom: 11px;
    right: 38%;
}
.pro-ul li:nth-of-type(4n+3):before{
	float: left;
	content: "\2190";
	font-size: 32px;
	padding: 10px 0;
	display: inline-block;
	color: #979797;
    position: absolute;
    left: -9%;
    top: 0;
}
.pro-ul li:nth-of-type(4n):after{
	content: "\2193";
	font-size: 32px;
	display: inline-block;
	color: #979797;
    position: absolute;
    left: 38%;
    bottom: 11px;
}
.pro-ul li:last-of-type:after,.pro-ul li:last-of-type:before{
	content: "";
}
.pro-ul li i{
	position: absolute;
	top: -14px;
	left: 50%;
	width: 28px;
	height: 28px;
	line-height: 28px;
	font-size: 14px;
	text-align: center;
	margin-left: -14px;
	z-index: 9;
	background: #eff6ff;
	border-radius: 100%;
	font-style: normal;
}

.pro-ul li>div.active,.pro-ul li .active i{
	background: #258aff;
	color: #fff;
}
.pro-ul li>div.dis,.pro-ul li .dis i{
	background: #eaeaea;
	color: #000;
}